Concrete building construction.



.R. v. woons. UONGRETE BUILDING CONSTRUCTION.

APP'LIOATION FILED JULY 12, 19 07. RENEWED OUT. 2, 1909.

94: Patented. Nov. 30, 1909.

INVENTOR y @WI Vaads;

viz/awa ATT EY UNITED STATES ATENrnFIo RAY v. woons, OF SAN rR'ANCIscO,CALIFORNIA, AssIGNoR or. O E-HALF 'I'o 'rIIR WOODRUFF COMPANY, or SANFRANCISCO, CALIFORNIA, .A CORPORATION or CALIFORNIA.

CONCRETE BUILDING CONsTRUc'rIoN.

Application filed July 12', 1907, Serial lilo. 383,434. Renewed October2, 1909. Serial No. 520,682.

T all whom it may concern:

Beit known that I, RAY V. Woons, a citizen of the United States,residing in the city and county of San Francisco and Stat-e'ofCalifornia, have invented new and useful Improvements'in ConcreteBuilding Constructions, ofwhich the following is a specification.

My invention relates to cement or concrete building constructions. Itsobject is to devise a method and means of building and laying floors,partitions, beams, girders and the like whereby the slabs or elementsenter-- ing into the structure may be cast separate and at anyconvenient place away from-the building and then hoisted into place andcomented together into a' permanent structure.

The invention consists of the parts and the construction and combinationof partsas hereinafter more fully described and l b claimed, havingreference to the accompanying drawing,in which *Fig. 2 is a. plan viewof the same.

Figure 11s a cross section of a girder showing my method of bonding theslab.

sections to each other and to the girder.

1s a side elevation of the same.

A represents a girder or beam which constitutes part of my invention.This beam or girder may be of, any suitable length depth and shapeaccording to its conditions of use. It comprises essentially a cast ofconcrete in which are embedded the longitudinally extending tension bars2-2', and the looped shear-bars or stirrups 3 which embrace the tensionbars and stand cross- Wise thereof and project a distance above the topsurface of the girder a little less approximately than the thickness ofthe slab sections-4:. .As here shown the girder A is substantially Tshape, but that is not essential so-long as a suitable seat or supportis provided for the adjacent ends of said slabs 4, and which seats arehere shown as furnished by the lateral flanges a of the beam. There areany desired number of these looped shear bars or stirrups3 to a beam,

ming lengthwise.

anchored to appropriate abutinents as the walls 7. Any desired formof.wall anchor for the beam. may be employed, such as the anchor bolts 8.Where two sets of tension rods 22 are used, the rods of the uppermacaw..- so, 1909 set 2 are bent up and then outward at their endsas'shown in Fig. 3; the ends of both sets b'eing hooked and containedwithin the concrete body of the.beam.- -The slabs like. the beam arecast separate from thejplace which they are designed-later to occupypermancntly in the building; the tension rods 6 in' the sl'abs beingbent upward within and adjaoentto the ends of'the slabs and projecting asufiicient distance beyond the ends-of .t-he slabs to enable them to-besuitably tied to or hooked over. the anchor rods,

5, when the slabs are laid in position. The .ends ofthe slabspurposelydonut abut be-' cause the end spacev between the. adjacentslabs is designed to form a pocket fora lill- 'ing of=ccment or concrete9; the previously exposed loops 3 and rods 5 and 6 being em bedded in'the cement filling which later serves to give finish and rigidity to thestructure and to prevent displacement of the ele ments. A union of thisoharacter'after the cement'or. concrete filling 9 has set operates tobond the slabs and girder together into one integral structure withevery part actu-' .ally. tied to the other; by metal; thatfis,

every slab is really tied to every other slab and to its supportinggirder by the connections" afforded by the several metal bonds 3-5 and6. 'The meta-l reinforcing is in fact continuous. in this system.

Having thus described my invention, what I claim and desire to secure byLetters Pat.- ent is 'In a buildingconstruction, the combina-' tion of aconcrete girder having longitudinal tension-rods extending through thelower portion thereof, said rods being spaced apart. shear-bars ofsubstantially rectangular form having. their major axis at right-anglesto the major axis of the girder and having their upper ends normallyprojecting above the top surface of said girder, said girder havinglateral flanges atits upper end, slabsections having their adjacent.endsscparated from each other and supported upon the flanged end of thogirder, the upper ends of said shear-bars entering the space between theadjacent-ends of the slab-sections; tension-rods extendinglongitudinally l hrough the slab-sections and projecting be I ends ofthe slabs and embedding the upper v ends of the hear-bals, the uppertie-rods, 0

and the Qrojeeting ends of the slab tie-rods. In testnnony whereof Ihave hereunto set my hand 1n presence of two subscribing witnesses.

RAY V. WOODS. Vitnesses:

' S. H. Nonnsia,

C. A. PENIIELD'.

